BTW - if this is a SUN version (Solstice/StorEdge), this will not work as the package names are different.
In this case, use nsradmin as shown in the example below. It is Windows but it's the same procedure for all NW OS. Just look for the version.
C:\>nsradmin -s servername
NetWorker administration program.
Use the "help" command for help.
nsradmin> . type: NSR
Current query set
nsradmin> print
type: NSR;
name: your_hostname;
version: NetWorker nw_7_3_2_jumbo.Build.386 Eval;
comment: ;
parallelism: 4;
manual saves: Enabled;
public archives: Disabled;
volume priority: NearLine Priority;
SmartMedia save mount: volume by characteristics;
license server: ;
update licenses: No;
device sharing mode: maximal sharing;
Jobsdb retention in days: 7;
Jobsdb maximum size (KB): 20460;
WORM pools only hold WORM tapes: Yes;
WORM tapes only in WORM pools: Yes;
administrator: "*@*";
contact name: ;
company: ;
street address: ;
city/town: ;
state/province: ;
zip/postal code: ;
country: ;
phone: ;
fax: ;
email address: ;
server OS type: Windows NT Server on Intel;
site-id: ;
support email address: ;
purchase date: ;
product serial number: ;
datazone pass phrase: ;
nsradmin> quit
C:\>